src/Input.cc
author terom
Tue, 09 Dec 2008 04:23:57 +0000
changeset 362 6c7b4deefdfb
parent 319 9f6a838d58c4
child 389 e74c1820fbd2
permissions -rw-r--r--
add some diagrams to .tex, merged changes
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#include "Input.hh"
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#include "Engine.hh"
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#include "Config.hh"
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InputKeymapEntry<PlayerInputBit> INPUT_PLAYER_KEYMAP[] = {
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    {   INPUT_AIM_UP,       INPUT_FLAG_UNLIMITED,   { -CL_KEY_ENTER,    CL_KEY_UP       } },
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    {   INPUT_AIM_DOWN,     INPUT_FLAG_UNLIMITED,   { -CL_KEY_ENTER,    CL_KEY_DOWN     } },
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    {   INPUT_MOVE_LEFT,    INPUT_FLAG_UNLIMITED,   { -CL_KEY_ENTER,    CL_KEY_LEFT     } },
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    {   INPUT_MOVE_RIGHT,   INPUT_FLAG_UNLIMITED,   { -CL_KEY_ENTER,    CL_KEY_RIGHT    } },
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    {   INPUT_JUMP,         INPUT_FLAG_SLOWREPEAT,  { -CL_KEY_ENTER,    CL_KEY_RSHIFT   } },
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    {   INPUT_DIG,          INPUT_FLAG_NOREPEAT,    { CL_KEY_LEFT,      CL_KEY_RIGHT    } },
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    {   INPUT_SHOOT,        INPUT_FLAG_UNLIMITED,   { CL_KEY_RCONTROL,  0               } },
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    {   INPUT_CHANGE_PREV,  INPUT_FLAG_SLOWREPEAT,  { CL_KEY_ENTER,     CL_KEY_LEFT     } },
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    {   INPUT_CHANGE_NEXT,  INPUT_FLAG_SLOWREPEAT,  { CL_KEY_ENTER,     CL_KEY_RIGHT    } },
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    {   INPUT_ROPE,         INPUT_FLAG_NOREPEAT,    { CL_KEY_ENTER,     CL_KEY_RSHIFT   } },
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    {   INPUT_UNROPE,       INPUT_FLAG_SLOWREPEAT,  { -CL_KEY_ENTER,    CL_KEY_RSHIFT   } },
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    {   INPUT_ROPE_UP,      INPUT_FLAG_UNLIMITED,   { CL_KEY_ENTER,     CL_KEY_UP       } },
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    {   INPUT_ROPE_DOWN,    INPUT_FLAG_UNLIMITED,   { CL_KEY_ENTER,     CL_KEY_DOWN     } },
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    {   INPUT_SUICIDE,      INPUT_FLAG_NOREPEAT,    { CL_KEY_LCONTROL,  CL_KEY_K        } },
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    {   INPUT_NONE,         0,                      { 0,                0               } }
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};
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InputKeymapEntry<GuiInputBit> INPUT_GUI_KEYMAP[] = {
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    {   GUI_INPUT_QUIT,             0,              { CL_KEY_ESCAPE,    0               } },
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    {   GUI_INPUT_DISPLAY_WEAPON,   0,              { CL_KEY_ENTER,     0               } },
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    {   GUI_INPUT_DEBUG_PLAYER,     0,              { CL_KEY_I,         0               } },
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    {   GUI_INPUT_NONE,             0,              { 0,                0,              } }
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};
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/*
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 * InputKeyRepeatEntry
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 */
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template <typename BitEnumType> 
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InputKeyRepeatEntry<BitEnumType>::InputKeyRepeatEntry (BitEnumType value, TimeMS expire) : 
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    value(value), expire(expire) 
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{
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}
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template <typename BitEnumType> 
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bool InputKeyRepeatEntry<BitEnumType>::operator< (const struct InputKeyRepeatEntry &other) {
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    return other.expire > expire;
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}
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template <typename BitEnumType> 
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bool InputKeyRepeatEntry<BitEnumType>::updateExpired (TimeMS dt) {
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    if (expire == 0)
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        return false;
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    expire -= dt;
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    return (expire <= 0);
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}
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/*
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 * InputKeyRepeatQueue
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 */
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template <typename BitEnumType> 
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InputKeyRepeatQueue<BitEnumType>::InputKeyRepeatQueue (TimeMS expire) :
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    expire(expire)
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{
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}
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template <typename BitEnumType> 
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void InputKeyRepeatQueue<BitEnumType>::push (BitEnumType bit, bool expire) {
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    list.push_back(InputKeyRepeatEntry<BitEnumType>(bit, expire ? this->expire : 0));
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}
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template <typename BitEnumType> 
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void InputKeyRepeatQueue<BitEnumType>::forget (BitEnumType bit) {
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    // go through the list, looking for it
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    for (list_iterator it = list.begin(); it != list.end(); it++) {
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        if (it->value == bit) {
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            // found, erase it and return
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            list.erase(it);
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            return;
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        }
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    }
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}
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template <typename BitEnumType> 
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bool InputKeyRepeatQueue<BitEnumType>::find (BitEnumType bit) {
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    for (list_iterator it = list.begin(); it != list.end(); it++) {
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        if (it->value == bit)
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            return true;
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    }
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    return false;
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}
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template <typename BitEnumType> 
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void InputKeyRepeatQueue<BitEnumType>::update (TimeMS dt) {
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    list_iterator it = list.begin();
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    // go through each entry, updateExpired and remove if expired
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    while (it != list.end()) {
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        if (it->updateExpired(dt))
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            it = list.erase(it);
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        else
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            it++;
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    }
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}
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/*
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 * InputHandler
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 */
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template <typename BitEnumType, typename BitMaskType> 
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InputHandler<BitEnumType, BitMaskType>::InputHandler (CL_InputDevice &keyboard, InputKeymapEntry<BitEnumType> *keymap, TimeMS keyrepeat_expire) :
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    keyboard(keyboard), 
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    keymap(keymap), 
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    value(0), 
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    prev_value(0),
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    dt(0),
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    queue(keyrepeat_expire)
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{
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}
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template <typename BitEnumType, typename BitMaskType> 
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bool InputHandler<BitEnumType, BitMaskType>::checkKeycode (int keycode) {
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    if (keycode > 0)
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        return keyboard.get_keycode(keycode);
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    else if (keycode < 0)
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        return !keyboard.get_keycode(-keycode);
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    else // == 0
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        return true;
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}
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template <typename BitEnumType, typename BitMaskType> 
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void InputHandler<BitEnumType, BitMaskType>::readValue (BitMaskType &mask, TimeMS &dt) {
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    // copy to args
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    mask = this->value;
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    dt = this->dt;
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    this->value = 0;
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    this->dt = 0;
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}
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template <typename BitEnumType, typename BitMaskType> 
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void InputHandler<BitEnumType, BitMaskType>::update (TimeMS dt) {
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    // all bits that are held down, even those ignored
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    BitMaskType raw_value = 0;
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    // update the key-repeat queue
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    queue.update(dt);
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    // then go through the keymap
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    for (InputKeymapEntry<BitEnumType> *e = keymap; e->input != 0; e++) {
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        // check if we've got the correct keycodes
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        if (checkKeycode(e->keycodes[0]) && checkKeycode(e->keycodes[1])) {
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            // set raw_value
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            raw_value |= e->input;
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            if (e->flags & INPUT_FLAG_SLOWREPEAT) {
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                // repeat, but slowly
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                if (!(prev_value & e->input)) {
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                    // we've released the key earlier, move it to the back of the queue
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                    queue.forget(e->input);
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                    queue.push(e->input);
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                } else if (queue.find(e->input)) {
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                    // it's still in the queue, so ignore, but set it in ignore_value
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                    continue;
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                } else {
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                    // ok, but add it to the queue
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                    queue.push(e->input);
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                }
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            } else if (e->flags & INPUT_FLAG_NOREPEAT) {
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                // do not repeat at all
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                if (prev_value & e->input) {
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                    // ignore repeats
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                    continue;
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                }
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            }
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            // set bit in masks
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            this->value |= e->input;
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        }
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    }
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    // update prev_value, also adding ignored values
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    prev_value = raw_value;
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    // then increment our dt
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    this->dt += dt;
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}
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/**
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 * Input
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 */
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Input::Input (CL_InputDevice &keyboard) :
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    keyboard(keyboard),
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    update_timer(INPUT_POLL_INTERVAL),
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    player(keyboard, INPUT_PLAYER_KEYMAP, INPUT_REPEAT_DELAY),
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    gui(keyboard, INPUT_GUI_KEYMAP, INPUT_REPEAT_DELAY)
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{
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    // connect timer 
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    slots.connect(update_timer.sig_tick(), &player, &InputHandler<PlayerInputBit, PlayerInput>::update);
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    slots.connect(update_timer.sig_tick(), &gui, &InputHandler<GuiInputBit, GuiInput>::update);
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    // enable timer
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    update_timer.start();
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}
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void Input::readPlayerInput (PlayerInput &mask, TimeMS &dt) {
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    player.readValue(mask, dt);
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}
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GuiInput Input::readGuiInput (void) {
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    GuiInput mask;
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    TimeMS dt;
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    gui.readValue(mask, dt);
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    return mask;
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}
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